Door and window locking device and door and window

Abstract

The present invention discloses a door and window locking device and a door and window. The door and window locking device includes a base, a handle, and a shift fork. The base extends in a front-to-back direction, and the handle also extends in a front-to-back direction. The handle and the base are connected by two swing arms, one end of the swing arm is hinged to the base, and the other end is hinged to the handle, and the two swing arms are parallel to each other. The shift fork includes a mounting portion, and the two ends of the mounting portion are respectively hinged to the middle portions of the two swing arms. The present invention connects the base, the handle, and the shift fork through two parallel swing arms. When a user forcefully shifts the handle, the handle and the shift fork perform a flipping translational motion, so that the handle can drive the shift fork while moving a short distance in space, thereby achieving the locking operation of the door and window.

Description

Technical Field

[0001] The present invention relates to the field of doors and windows, in particular to locking devices on doors and windows. Background Art

[0002] With the development of aluminum alloy doors and windows and the deepening awareness of energy conservation and environmental protection, people are increasingly demanding multifunctional doors and windows, no longer satisfied with a single function. For narrow-sided casement windows, handles are generally installed on the side. However, traditional handles are relatively high and installed from the front, which cannot meet the side installation requirements of narrow-sided casement windows with integrated screens. To address the above shortcomings, although a number of hidden door and window locking structures have emerged in the prior art, including hidden handles, existing hidden handles are relatively cumbersome to operate, requiring the hidden handle to be lifted and then rotated to lock the door or window. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a door and window locking device to solve one or more technical problems existing in the prior art and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem solved by the present invention is: a door and window locking device, including a base, a handle and a fork, the base extends in the front-to-back direction, the handle also extends in the front-to-back direction, the handle and the base are connected by two swing arms, one end of the swing arm is hinged to the base, and the other end is hinged to the handle, and the two swing arms are parallel to each other; the fork includes a mounting portion, and the two ends of the mounting portion are respectively hinged to the middle parts of the two swing arms.

[0005] The beneficial effect of the present invention is that the present invention connects the base, the handle and the fork through two parallel swing arms. When the user pushes the handle hard, the handle and the fork perform a flipping translational motion, so that the handle can realize the driving action of the fork when the moving distance in space is short, thereby realizing the locking operation of the doors and windows.

[0006] As a further improvement of the above technical solution, the base includes a concave cavity, the concave cavity includes a side wall, the handle is located in the concave cavity, the swing arm and the base are axially connected by a first pin, the side wall is provided with an axial hole, and the first pin is sleeved in the axial hole.

[0007] By arranging a groove on the base, the handle can be hidden in the base.

[0008] As a further improvement of the above technical solution, the cavity further comprises a bottom wall, wherein a slide groove is provided in the bottom wall, and the shift fork passes through the slide groove, which can play a certain guiding role for the shift fork.

[0009] As a further improvement to the above technical solution, a connecting portion is provided in the middle of the handle, and an operating portion is provided at one end of the handle. The thickness of the connecting portion is greater than that of the operating portion. The swing arm is pivotally connected to the connecting portion via a second pin. By optimizing the shape of the handle, the handle can be operated more easily, while saving materials and reducing production costs.

[0010] As a further improvement of the above technical solution, each of the swing arms includes two connecting rods, the two connecting rods on the same swing arm are separated from each other, and the mounting portion is clamped between the two connecting rods on the same swing arm.

[0011] As a further improvement to the above technical solution, the shift fork further includes a connecting portion having a latching slot therein. The latching slot includes a straight slot and a circular slot, the circular slot having a center point on the straight slot, and a diameter greater than the width and less than the length of the straight slot. By utilizing the width difference between the circular slot and the straight slot, the shift fork can be more effectively stressed when unloaded, making opening easier.

[0012] At the same time, the present invention also provides a door and window, including a window frame, on which the above-mentioned door and window locking device is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described only illustrate some embodiments of the present invention, not all of them. Those skilled in the art can derive other design solutions and drawings based on these drawings without inventive effort.

[0014] Figure 1 is an exploded view of the door and window locking device of the present invention;

[0015] Figure 2 is a cross-sectional view of the door and window locking device of the present invention in state 1;

[0016] Figure 3 2 is a cross-sectional view of the door and window locking device of the present invention in state 2. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in conjunction with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. The preferred embodiments of the present invention are shown in the drawings. The purpose of the drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0019] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0020] In the description of the present invention, unless otherwise expressly defined, terms such as "install," "connect," and "set" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in the present invention based on the specific content of the technical solution. Furthermore, the various technical features of the present invention may be combined interchangeably as long as they do not conflict with each other.

[0021] Reference Figures 1 to 3 A door and window locking device includes a base 100, a handle 200 and a fork 300. The base 100 extends in the front-to-back direction, and the handle 200 also extends in the front-to-back direction. The handle 200 and the base 100 are connected by two swing arms 400. One end of the swing arm 400 is hinged to the base 100, and the other end is hinged to the handle 200. The two swing arms 400 are parallel to each other. Preferably, the two swing arms 400 have the same length; the fork 300 includes a mounting portion 310, and the two ends of the mounting portion 310 are respectively hinged to the middle parts of the two swing arms 400.

[0022] Further as a preferred embodiment, the base 100 includes a cavity 110, the cavity 110 includes a side wall 111, the handle 200 is located in the cavity 110, the swing arm 400 and the base 100 are axially connected by a first pin 500, and an axial hole 112 is provided on the side wall 111, and the first pin 500 is sleeved in the axial hole 112.

[0023] As a further preferred embodiment, the cavity 110 further includes a bottom wall 113 , a sliding groove 114 is provided in the bottom wall 113 , and the shift fork 300 passes through the sliding groove 114 .

[0024] As a further preferred embodiment, a connecting portion 210 is provided in the middle of the handle 200, an operating portion 220 is provided at one end of the handle 200, and the thickness of the connecting portion 210 is greater than the thickness of the operating portion 220; the swing arm 400 is axially connected to the connecting portion 210 through a second pin 600.

[0025] As a further preferred embodiment, each of the swing arms 400 includes two connecting rods 410 , the two connecting rods 410 on the same swing arm 400 are separated from each other, and the mounting portion 310 is clamped between the two connecting rods 410 on the same swing arm 400 .

[0026] As a further preferred embodiment, the shift fork 300 also includes a connecting portion 320, in which a slot 330 is provided. The slot 330 includes a straight slot 331 and a circular slot 332. The center point of the circular slot 332 is on the center line of the straight slot 331, and the diameter of the circular slot 332 is greater than the width of the straight slot 331 and less than the length of the straight slot 331.

[0027] See also Figure 1The upper, middle, and lower ends of the connecting rod 410 are respectively provided with an upper through-hole 411, a middle through-hole 412, and a lower through-hole 413. The mounting portion 310 of the shift fork 300 is provided with mounting holes 311 at both ends. During installation, the upper through-hole 411 and the connecting portion 210 are first axially connected via the second pin 600, thereby connecting the swing arm 400 to the handle 200. Then, the first pin 500 is inserted through the axial hole 112 and the lower through-hole 413, connecting the swing arm 400 to the base 100. Finally, the ends of the mounting portion 310 of the shift fork 300 are clamped between the two connecting rods 410 of the two swing arms 400. The third pin 700 is simultaneously inserted through the mounting hole 311 and the middle through-hole 412, thus completing the installation of the door and window locking device. Of course, the connecting portion 320 of the shift fork 300 needs to pass through the slide slot 114. Preferably, the depth of the cavity 110 is substantially the same as the thickness of the handle 200. The length of the cavity 110 is greater than that of the handle 200. The handle 200 is mounted roughly in the center of the cavity 110. The base 100 has fixing holes at both ends for connecting to the window frame. These two fixing holes allow the prepared locking device to be installed in the window frame. After assembly, the locking slot 330 of the shift fork 300 should engage the pin a of the door or window. Furthermore, the width of the straight slot 331 of the locking slot 330 is slightly larger than the outer diameter of the pin a.

[0028] See also Figure 2 When the door and window are locked, the bottom of the handle 200 is basically close to the bottom wall 113 of the cavity 110, the upper surface of the handle 200 is basically flush with the upper surface of the base 100, and the swing arm 400 is also basically parallel to the front-to-back direction; at this time, the fork 300 is located at the rearmost side, and the pin a is also just located in the circular groove 332.

[0029] See also Figure 3 When the door or window needs to be opened, the handle 200 is lifted upward with force. At this point, two swing arms 400 of equal length and parallel to each other connect the handle 200 to the base 100. Under the constraints of the two swing arms 400, the handle 200 flips upward relative to the base 100, maintaining a parallel front-to-back orientation. Since both ends of the mounting portion 310 of the fork 300 are also hinged to the two swing arms 400, the movement trajectory of the fork 300 is similar to that of the handle 200, and the fork 300 moves upward and forward relative to the base 100. Because the pin a is stuck in the slot 330 of the fork 300, it is driven by the fork 300 and moves forward as well. The movement of the pin a is consistent with the displacement of the fork 300 in the front-to-back direction. Once the pin a moves forward, the door or window can be unlocked.

[0030] On the contrary, when locking is required, the handle 200 is pressed back downwards, and the pin a moves backwards under the drive of the shift fork 300. It should be understood that the pin a is always located in the slot 330 during the entire unlocking and locking process.

[0031] Furthermore, because the latching slot 330 includes a circular groove 332, which is located relatively above the shift fork 300, during the initial unlocking phase, the pin a is located within the circular groove 332. The clearance between the pin a and the latching slot 330 is large, and the pin a exerts little reaction force on the shift fork. Therefore, the handle 200 can be easily lifted. During this initial phase, the handle 200 is not required to move the pin a, effectively acting as an unloaded state, making it easy to open.

[0032] When the shift fork 300 moves upward a certain distance, the pin a starts to move downward into the straight groove 331. The width of the straight groove 331 is substantially the same as the outer diameter of the pin a. Therefore, the handle 200 starts to enter the load stage and starts to drive the pin a to move, thereby achieving control over the pin a.

[0033] In some embodiments, the length of the slot 114 can be adjusted so that when the front end of the shift fork 300 hits the edge of the slot 114, the swing range of the handle 200 can be limited. For example, when the handle 200 swings to 90°, that is, the swing arm 400 is in the up-and-down direction, the handle 200 cannot move forward. Of course, in addition to utilizing the length of the slot 114, the limit can also be determined by the travel of the pin a.

[0034] In other embodiments, the handle 200 can swing beyond 90°. When the handle 200 swings beyond 90° and continues to move forward, the pin a moves upward relative to the slot 330. When the handle 200 swings to a certain extent, the pin a re-enters the circular slot 332. At this point, the swing arm 400 has flipped 180°, and the handle 200 re-enters the cavity 110. The pin a moves forward to its limit position, indicating a locked state.

[0035] To unlock, just move the handle backwards.

[0036] Due to the presence of the circular groove 332 , the handle 200 is easy to open in the initial stages of unlocking and locking.

[0037] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A door and window locking device, characterized in that: The two ends of the lever arm are connected to the bottom end of the swing arm and the other end is connected to the bottom end of the swing arm, and the two ends of the lever arm are connected to the bottom end of the swing arm by a pin.

2. The door and window locking device according to claim 1, characterized in that: An operating portion is provided at one end of the handle, and a thickness of the connecting portion is greater than a thickness of the operating portion.

3. The door and window locking device according to claim 1, characterized in that: Each of the swing arms includes two connecting rods, the two connecting rods on the same swing arm are separated from each other, and the mounting portion is clamped between the two connecting rods on the same swing arm.

4. The door and window locking device according to claim 1, characterized in that: The shift fork also includes a connecting portion, in which a slot is provided. The slot includes a straight slot and a circular slot. The point of the circular slot is on the center line of the straight slot. The diameter of the circular slot is greater than the width of the straight slot and less than the length of the straight slot.

5. A door or window, including a window frame, characterized in that: It comprises the door and window locking device according to any one of claims 1 to 4, wherein the door and window locking device is installed on the window frame.

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